Business Mathematics Brief 12th Edition by Stanley Salzman ,Gary Clendenen, Charles Miller

تمرين 19

A federal law requires that all residential toilets sold in the United States use no more than 1.6 gallons of water per flush. Prior to this legislation, conventional toilets used 3.4 gallons of water per flush. Find the amount of water saved in one year by a family flushing the toilet 22 times each day 11 year = 365 days2. __________